Shaft-collar



(No Model.) F. SIMONSON.

- SHAFT COLLAR. No. 448,087. Patented Mar. 10, 1891.

flan/e1) Simonsom.

3& Guam/1 s Uni-ran rarns FLAVEL SIMONSON, OF MITAVAUKEE, XVISCONSIN.

SHAFT-COLLAR.

SPECIFICATION forming part of Letters Patent No. 448,087, dated March 10, 1891.

Application filed November 22, 1890. Serial No. 372,374. (No model.)

To a'ZZ whom it may concern.-

Be it known that I, FLAVEL SIMONSON, a citizen of the United States of America, residing at Milwanketg-in the county of Milwankee and State of Wisconsin, have invented certain newand useful Improvements in Shaft-Collars, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to shaft-collars designed to prevent the eudwise movement of a shaft in its bearings.

The object of the invention is to produce a shaft-collar which, when secured in position upon .a shaft, will be held firmly in place thereon against the jar and impact between the collar and shaft-bearing incident to the endwise movement of the shaft.

A further object is to produce a shaft-collar which may be manufactured at a slight cost.

lVith these objects in view the invention consists, broadly, in a shaft-collar having an interior concave recess terminating at its sides in binding-edges and means for bringing said edges into contact with the shaft to lock the collar thereon.

The invention further consists in the various novel details of construction, as will be hereinafter fully described and claimed.

In the accompanying drawings, forming part of this specification, and in which like numerals and letters of reference indicate corresponding parts, Figure 1 is a side elevation of the collar, partly in section, showing the general construction of the same. Fig. 2 is a vertical longitudinal sectional view taken on the line so a; of Fig. 1, showing the interior contour of the collar and a shaft in broken elevation. Fig. 3 is a side elevation, partly in section, of a modified form of collar. Fig. 4c is a similar view of another form; and Fig. 5 is a vertical longitudinal sectional view taken on the line y y of Fig. l, showing its interior construction.

Referring to the drawings, A and B, Fig. 1, designate two sections of shaft-collar, which may be constructed of any suitable metal, but preferably in this instance of malleable or cast iron. Each section is approximately semicircular in form and is provided on each side with perforated ears 1, through which pass bolts 2 for clampingthe two sections together. The interior of each section is formed with a semicircular recess 3, the two recesses, when the sections A and B are clamped together, forming a shaft-opening which is not perfectly circular, but slightly elliptical, owing to the fact that the metal of the under and upper faces 4 and 5 of the ears 1 is cut away for this purpose, so as to make the opening slightly smaller than the shaft, in order to insure aperfectly tight and rigid adjustment of the collar when the nuts 6 of the bolts 2 are turned to their respective seats. Between the sides 7 of the sectionsis formed a concave recess 8, the said recess in conjunction with the sides forming bindingedges 9, which encircle the shaft. As shown, the edges are nearly smooth, the only roughness being the fin or edge caused by the grain of the sand in casting; but, if desired, the said edges may be roughened or serrated in order to increase their biting or cutting capacity.

In Fig. 3, which is a modification of Fig. 1, there is shown but one bolt and nut for clamping the collar in place upon the shaft. With thisexception the constructions of the two figures are the same.

In Figs. 4: and 5 is shown another modification. In this case the collar is made in the form of a ring and a portion of the shaft-' opening is cut away to form a recess 10, in which is fitted a gib 1'1, actuated bymeans of a screw-bolt 12 to engage with v the shaft. The gib and also the collar are provided are with a concave recess 13, similar to that shown in the other views. If desired, there may be a number of gibs and screw-bolts employed, although in this instance but one is shown.

In placing this collar on the shaft the nuts are first screwed to their seats, and by gently striking the sections the edges are caused to sink into the shaft, after which the nuts are again turned, the operation being repeated until the binding-edges'are firmly seated in the shaft. Vhen once secured, the collar cannot slip or be loosened on the shaft by impact or vibration, inasmuch as the vertical exterior wall of the binding-edge will have a tendency to raise a burr as pressure is ap- ICO a circular concave recess between the said edges.

4. Asectional shaft-collar, each section having an interior COHGHNG recess, and a bindin g-edge on each side of the recess, and means for clamping the sections on a shaft.

In testimony whereof I affix my signature in presence of two witnesses.

FLAVEL SIMONSON.

\Vitnesses:

ALBERT SPEIDEN, ROBERT M. ELLIOTT. 

